Classifications

• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
  • D03D49/04—Control of the tension in warp or cloth
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
  • D03C3/00—Jacquards
  • D03C3/24—Features common to jacquards of different types
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
  • D03C3/00—Jacquards
  • D03C3/24—Features common to jacquards of different types
  • D03C3/42—Arrangements of lifting-cords
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/18—Mechanical movements
  • Y10T74/18056—Rotary to or from reciprocating or oscillating

Definitions

• the invention relates to a cordless thread control device according to the preamble of claim 1.
• a cordless thread control device of the type mentioned at the outset is known, for example, from GB 1 219 012 A.
• a driver for the thread designed as a steel plate has a hook on its end part facing a locking device, with which the steel plate can optionally be locked with the locking device.
• the hook is designed in an arc shape in order to give the end part of the driver elastic properties which are intended to dampen the locking of the hook with the locking device.
• the curved and resilient design of the hook makes it unstable in the longitudinal direction of the steel plate, as a result of which the catch cannot be securely locked in place with the locking device. This can lead to an inaccurate operation of the thread control device, to a reduction in the rotational speeds and finally to weaving errors in the fabric web produced.
• the object of the invention is to design a thread control device of the type mentioned at the outset in such a way that it does not have the disadvantages mentioned.
• the driver in the thread control device divides between the lifting device and the control means and the driver parts are connected via an elastic damper element and / or the driver is coupled contactlessly with the lifting device via an electromagnetic field of an electromagnetic coupling device acting as a damper
• the loads at the Latching the driver on the locking device is damped and nevertheless a secure locking of the driver on the locking device is ensured.
• the force transmission in the thread control device is damped, so that shocks are reduced, in particular even with high numbers of drives, and damage to the locking means is thus reduced. In particular, this leads to significantly reduced wear and thus a longer service life with increased performance.
• the noise level is further reduced, which results in improved working conditions for the operator.
• damper is designed as a stop for the lifting device, since the direct introduction of force is given here.
• the coupling device according to claim 3 has a permanent magnet fixedly arranged on the driver, the pole of which is held suspended between two poles of the same arrangement and arranged on the lifting device of a magnetic device in such a way that the driver can be driven as long as the driver is not by the control means is locked in its movement.
• the poles of the permanent magnet can be aligned according to claim 4 in the direction of movement of the driver or according to claim 5 transverse to the direction of movement of the driver.
• the magnetic device of the lifting device is designed to be permanently magnetic. But even an electrical design according to claim 7 can be conceivable despite a complicated power supply.
• a particularly compact design results if, according to claim 8, a locking device in the weft direction and / or in the warp direction of the
• Shed forming device seen the same division as the healds leading the warp threads.
• a particularly flat and effective design results if the driver is designed as a flat circuit board, one end part of which is designed directly as a control means which can be brought into engagement with a locking member under the influence of an electromagnetic actuator. It is particularly advantageous if the actuator is designed as an oblique pole magnet and the end part of the driver as a leaf spring.
• the end part of the driver can be provided with a locking recess which cooperates with the locking member.
• the driver cooperates with a return spring which is expediently arranged on the end part which faces away from the control means.
• Figure 1 shows a first thread control device for a shedding device in a schematic representation
• Figure 2 shows a second thread control device for a shedding device in a schematic representation
• Figure 3 shows the thread control device of Figure 2 in section III-III;
• Figure 4 shows the thread control device of Figure 2 in section IV-IV and on a larger scale
• Figure 5 shows the thread control device of Figure 2 in view V-V
• Figure 6 shows a third thread control device for a shedding device in a schematic representation
• Figure 7 shows the coupling device between the lifting device and the
• FIG. 1 shows a schematic representation of a thread control device, as it is particularly suitable as a shedding device for a weaving machine.
• the warp threads 2 fed via a warp beam 8 are opened to a shed 6 by means of drivers 4 designed as strands.
• a weft thread 10 is shot into the shed 6 and attached to the fabric edge 12, so that a fabric web 14 results which is drawn off via a fabric tree 16.
• the thread control device contains the drivers 4, which have eyelets 18 through which the warp threads 2 are guided.
• the drivers 4 are biased in one direction, for example downwards, by means of springs 20 in the basic position.
• An oscillating lifting device 22 with lifting knives 24 engages with a stop 26 on the driver 4 and moves it up and down in the rhythm of the lifting device 22, until the driver is blocked in the high position by means of the locking device 28.
• the locking device contains control means 30 in the form of a leaf spring 32 which is firmly clamped on one side and which can be pivoted out against the driver 4 under the influence of an electromagnetic actuator 34, so that a hook 36 of the leaf spring 32 interacts with a hook 38 of the driver and this in the upper one Position that holds the high position.
• the driver 4 is divided and the driver parts 4a, 4b are connected in a contactless manner by a damper 40 which is formed from an elastic member 42 which acts on the lifting knife 24 of the lifting device 22.
• the strokes of the lifting device acting on the stop 26 are thereby damped, which reduces noise on the one hand and wear of the thread control device despite the high drive power.
• the wear of the hooks 36, 38 of the control means 30 and of the driver 4 is thereby significantly reduced, and the service life of the shedding device is thus improved.
• FIGS. 2 to 5 show a further thread control device which is designed analogously to the thread control device of FIG. 1 and can be used to form a shed on a weaving machine.
• the drivers 44 are designed as flat boards and consist of two driver parts 44a, 44b which are connected in a contactless manner by the damping member 40.
• the upper end part of the driver 44 serves as control means 46 and is designed for this purpose as a leaf spring which swings out against an actuator 48 when it is activated.
• the actuator 48 is designed as an oblique pole magnet, as can be seen in particular from FIG. 2. It has an essentially E-shaped cross section, the central web 50 of which is provided with a winding 52, so that the actuator becomes electromagnetic when a current is applied and attracts the upper end part 54.
• the upper end part 54 of the driver 44 which serves as the control means 46, contains an opening 56, by means of which it interacts and is held in place when the actuator 48 is activated.
• the design of the thread control device is such that the locking devices 60 formed from the actuators 48 and the control means 46 - viewed in the weft direction 62 and / or warp direction 64 of the shedding device - each have the same pitch TK and / or TS as that of the warp threads 2 leading drivers 44. This results in a very compact design of the thread control device, which is particularly suitable for the shedding device of a weaving machine.
• FIGS. 6 and 7 show a further thread control device which is designed analogously to FIG. 1 and which, as a damper 40a, has a contactless magnetic coupling device 66 by means of which the drivers 68 are connected to the lifting device 70.
• the catches 68 can be undivided or, in the same way as in the exemplary embodiment in FIG. 1, can be split, the catch parts 68a, 68b being connected to one another in a contactless manner via a damper 40.
• the coupling device 66 contains a permanent magnetic coupling member 72 which interacts with corresponding coupling members 74 of the lifting device 70, as is shown in detail in FIG. 7.
• the permanent magnetic coupling member 72 of the driver 68 is aligned in the direction of movement of the driver 68 and interacts with coupling members 74 of the lifting device 70, which are also aligned in the direction of movement, but in which the Poles are oriented in such a way that identical poles interact between the coupling elements 72 and 74 on each side. Due to the magnetic field formed in this way, the coupling member 72 of the driver 68 is held in contact between the coupling members 74 of the lifting device 70 without contact and is carried along.
• the coupling device provides a particularly impact-free drive for the drivers, which has the effect of reducing noise and wear.
• the drivers must have sufficient flexural rigidity in the direction of displacement and can be made from a wide variety of materials, such as plastic, but are usually made of steel.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Looms (AREA)
• Knitting Machines (AREA)
• Sewing Machines And Sewing (AREA)
• Spinning Or Twisting Of Yarns (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (2)

Family

ID=29410160

Family Applications (1)

Country Status (12)

Families Citing this family (7)

Citations (7)

Family Cites Families (9)

• 2003
  • 2003-04-15 JP JP2004503710A patent/JP2005530049A/ja active Pending
  • 2003-04-15 ES ES03709555T patent/ES2279941T3/es not_active Expired - Lifetime
  • 2003-04-15 AU AU2003213980A patent/AU2003213980A1/en not_active Abandoned
  • 2003-04-15 US US10/509,470 patent/US20050204834A1/en not_active Abandoned
  • 2003-04-15 EP EP03709555A patent/EP1504143B1/de not_active Expired - Lifetime
  • 2003-04-15 RU RU2004136570/12A patent/RU2299935C2/ru active
  • 2003-04-15 BR BR0309364-6A patent/BR0309364A/pt not_active IP Right Cessation
  • 2003-04-15 DE DE50306584T patent/DE50306584D1/de not_active Expired - Fee Related
  • 2003-04-15 AT AT03709555T patent/ATE354691T1/de not_active IP Right Cessation
  • 2003-04-15 CN CN038105780A patent/CN1653218B/zh not_active Expired - Fee Related
  • 2003-04-15 WO PCT/CH2003/000252 patent/WO2003095728A2/de active IP Right Grant
  • 2003-04-15 KR KR1020047017769A patent/KR100902304B1/ko not_active IP Right Cessation

Patent Citations (7)

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